-ol b-u bbb bbc bbe bbh bbl bbo bbu bcb bcc bce bch bcl bco bcu be- beb bec bee beh bel beo beu bhb bhc bhe bhh bhl bho bhu blb blc ble blh bll blo blu bob boc boe boh bol boo bou bub buc bue buh bul buo buu c-- cbb cbc cbe cbh cbl cbo cbu ccb ccc cce cch ccl cco ccu ce- ceb cec cee ceh cel ceo ceu ch- chb chc che chh chl cho chu cl- clb clc cle clh cll clo clu co- cob coc coe coh col coo cou cub cuc cue cuh cul cuo cuu ebb ebc ebe ebh ebl ebo ebu ec- ecb ecc ece ech ecl eco ecu eeb eec eee eel eeo ehb ehc ehe ehh ehl eho ehu elb elc ele elh ell elo elu eo- eob eoc eoe eoh eol eoo eou eu- eub euc eue eul hbb hbc hbe hbh hbl hbo hbu hcb hcc hce hch hcl hco he- heb hec hee heh hel heo heu hhb hhc hhe hhh hhl hho hhu hlb hlc hle hlh hll hlo hlu hob hoc hoe hoh hol hoo hou hub huc hue huh hul huo huu lbb lbc lbe lbh lbl lbo lbu lcb lcc lce lch lcl lco lcu leb lec lee leh lel leo leu lhb lhc lhh lho lhu llb llc lle lll llo llu lob loc loe loh lol loo lou lub luc lue luh lul luo luu ob- obb obc obe obh obl obo obu oc- ocb occ och ocl oco ocu oeb oec oee oeh oel oeo ohc ohe ohh ohl oho ohu olb olc ole oll olo olu oo- oob ooc ooh ool ooo ou- ouc oue ouh oul ouo ubb ubc ube ubh ubl ubo ubu ucb ucc uce uch ucl uco ucu ueb uec uee ueh uel uhb uhc uhe uhh uhl uho uhu ulb ulc ule ull ulo ulu uob uoc uoe uol uoo uuc uue uuu